Knife



March 30, 1937. A. STORFER 2,075,553

` KNIFE File-d March le, 193e INVENTOR Patented Mar. 30, 1937 UNITEDSTATES IPATENT 'ol-FICE Application March 16,

1 Claim.

This invention relates to improvements in knives and has for its mainobject to provide a knife for cutting furs, skins or the like, whoseconstruction will be simple and of relatively small 5 cost, and whereinjust a section of a safety razor blade of the usual Gillette type can beutilized as a cutting edge.

Another object is to so construct the holder as to permit the mountingand replacement of the blade easily and quickly and which willeffectively hold the blade in operative position against wabbling.

The hitherto known fur knives require use of specially shaped razorblades and their construction is unsatisfactory in that they arecomparatively costly and that the blades cannot be firmly locked inposition.

With these and other objects in view, my invention consists in the novelconstruction combination and arrangement of parts as will be hereinaftermore fully described and defined in the appended claim.

In the accompanying drawing which constitutes part of this specificationand in which similar reference characters denote corresponding parts:

Fig. l is a side elevation of my improved knife showing the blade lockedin the holder.

Fig. 2 is a similar view showingv the blade un. locked in the holder,and

Fig. 3 is section on line 3-3 of Fig. 1.

As cutting edge for my knife I utilize a half section of a razor bladeR. of the Gillette or similar type, formed by splitting the latterdiametrically. I found that such half razor blade can be convenientlymounted and locked in operative position in a holder which constitutesmy invention.

The holder comprises a at mounting member or plate I of sheet metal ofwhich the front or head portion II is tapered and formed with a cut outportion Ilc and the rear portion I2 serves as a handle or grip.

The inclined front edge I Ia of the head portion 45 is longitudinallybent upon itself to form a bead or flange I Ib which extends from thebottom edge to a point short of the peak or top end of the incline IIa.This bead is bent in such a manner as to form between itself and theinner face of the plate a laterally flaring or wedge shaped groove Ilf(Fig. 3) which at the juncture of said bead and body portion of theplate is but slightly wider than the thickness of said razor blade R.

At a point spaced from the said bead the head portion II of said plateI0 is formed, by punch- 1936, Serial No. 69,042

ing or otherwise, with a short stud or projection IIe to engage theusual hole R' of said razor blade whereby the latter can be centered onthe plate so that its biased edge will extend through the groove IIfparallel to the front biased edge 5 IIa of the head portion II, whileits cutting edge R2 will project beyond the lower edge of the cut awayportion IIc and its rear edge be in alinement with the shoulder Ildformed at the rear end of the cut away portion II. 1o

At a suitable point, as at I3a, there is pivotally secured to saidmounting plate I0 a flat locking member I3 of resilient sheet metal,whose front or head portion I3b is also tapered, the inclined edge I3cthereof conforming with the edge IIa of the plate Ill and whose rear endi3d serves as a handle. 'Ihis inclined edge I3C is adapted when thelocking member is turned on its pivot I3a in clockwise direction (Fig.2) to enter the groove IIf and on exertion of suflicient pressure towedge the razor blade R. between itself and the plate IIJ so as tofirmly lock said blade in operative position.

In order to prevent said locking plate I3 from accidentally leaving thegroove Ilf, the stud IIe 5 may be made a little higher than thethickness of the razor blade and the head portion of said locking memberI3 may be provided on its inner face with a circular depression I3e tosnap over and engage the stud IIe when the biased edge I3c of saidmember on passing into the groove I If is substantially parallel withthe edge IIa of plate I0.

The handle or rear portion i3d of said locking member I3, for thepurposes of economy in material, may be considerably shorter than thatof the base plate I0 and is so shaped that its lower edge I3lz will bein alinement with or follow the contour of the lower edge I2a of thehandle portion I2 of said mounting plate ID. Said handle I3d may beprovided with a circular cut out I3f for the insertion of the ringer'tip whereby it may be conveniently turned into unlocking position.

The lower edge of the head portion I3b of said locking member I3 is alsocut away as I3h to be in complete alinement with that of the mountingplate I0, so that after the blade has been wedged in operative positionits cutting edge R2 will be fully exposed.

From the foregoing it will be seen that a half section of a razor bladeof the Gillette type can be conveniently utilized as cutting edge for myknife and that the same can easily and quickly be secured in my improvedholder. It will also be seen that by reason of the simplicity ofconstruction its cost of production is reduced to a minimum.

Since various changes may be made in the construction of my devicewithout departing from the principle of my invention, I do not wish torestrict myself to the details described and shown.

What I claim is:

In a knife for cutting fur or the like, the com- 10 bination with asection of a. razor blade of the Gillette type formed with a biasededge, of a holder for said blade section comprising a. mounting platewhose front edge is biased to conform with a biased edge of the razorblade section,

ALFRED STORFER.

